Use the bundled adapter.js instead of an external dependency
Prevent bower to use a too recent adapter.js
Janus.js uses MediaStreamTrack.getSources which is not longer provided forFirefox by adapter.js. This change ensures bower uses the last adapter.jsversion still defining that function.
Added bower.json file so we can register the front end janus.js library with the bower registry, making it easier for front end developers to pull into their projects